Tungurahua volcano news & eruption updates:
Tungurahua volcano (Ecuador), eruption summary 29 Aug - 4 Sep
IG reported that during 29 August-4 September visual observations of Tungurahua were often limited due to cloud cover. Moderate seismicity was detected during 29-30 August and a few earthquakes were felt by residents. On 30 August steam plumes with low ash content rose 500 m above the crater and drifted W.
jeu., 6 sept. 2012, 06:2306:23 AM | AUTEUR : T
Ashfall was reported in Manzano (8 km SW) and Choglontus. Incandescent blocks rolled 300 m down the flanks, roaring was heard, and structures in nearby areas vibrated. During 31 Auguts-1 September steam plumes rose 300-500 m and drifted W. Glow emanated from the crater and incandescent blocks rolled down the flanks, up to 500 m on 31 August. Ashfall was reported in Manzano. An explosion produced a plume that rose 300 m on 3 September, and a steam plume drifted W on 4 September.
Source: Smithsonian / USGS Weekly Volcanic Activity Report
mer., 5 sept. 2012, 10:05
Weak explosions with ash emissions have resumed at the volcano. The last one was reported at 23h36 (GMT) last night. ... lire toutes
mer., 5 sept. 2012, 12:33
From noon on Saturday, September 1, 2012, there was an increase in the number of earthquakes associated with the movement of fluids inside the volcano. These earthquakes are long period events of small energy mainly registered by the station located in the northwestern flank of the volcano. The highest value corresponds to 532 long period events recorded between 2 and 3 September. Larger explosions were not generated. ... lire toutes
lun., 3 sept. 2012, 10:05
Seismic activity has increased since the beginning of the month again, however not reached previous levels and IG describes it at moderate. Surface activity have been mainly steaming, creating a 300 m high plume, and few weak explosions, causing light ash fall. ... lire toutes
dim., 2 sept. 2012, 12:17
Since the beginning of this week Tungurahua's seismic activity was characterized by internal fluid movements (LP events) and volcano-tectonic earthquakes (VT) (rock fracturing within the volcanic edifice). There were 8 quakes under the northwestern flank of Tungurahua at depths between 3-13 km below the summit. It is worth noting that some of these events were felt by residents of CUSU, Juive Grande, Puntzán and Bathrooms in the evening of 26 August at 20h26 (local time) and on 29 August at 18h46 (local time) and 30 August at 09h32 (local time). These local events had magnitudes between 2.5 and 2.6. The other quakes were only recorded instrumentally. ... lire toutes